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1 result for CVE-2025-55182 · exact CVE match · NVD record, scored with CISA KEV and FIRST EPSS

CVE-2025-55182

Meta — Meta React Server Components Remote Code Execution Vulnerability

Meta · CWE-502 — Deserialization of untrusted data · in CISA KEV since 2025-12-05

ExigentCISA federal deadline · Overdue by 10 monthsRansomwareCISA KEVActively Exploited
97

EVRS 97 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 1 of 2,956 tracked

Open CVE page Download PDF

Why it scores 97

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and associated with known ransomware campaigns.

  • CISA KEVApplied
  • RansomwareApplied
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

next.js: update to 15.0.5 or later | next.js: update to 15.1.9 or later | next.js: update to 15.2.6 or later | next.js: update to 15.3.6 or later | next.js: update to 15.4.8 or later | next.js: update to 15.5.7 or later

Affected versions

  • react19.0.019.1.019.1.119.2.0
  • next.js>= 15.0.0 < 15.0.5>= 15.1.0 < 15.1.9>= 15.2.0 < 15.2.6>= 15.3.0 < 15.3.6>= 15.4.0 < 15.4.8>= 15.5.0 < 15.5.7>= 16.0.0 < 16.0.714.3.015.6.016.0.0

Remediation

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 10.0 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.998 (99.96th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Known CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2025-12-12 · CISA federal deadline · Overdue by 10 months CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 10.0 (v3.1), assigned by Meta. Listed ENISA EUVD

Description

NVD

A pre-authentication remote code execution vulnerability exists in React Server Components versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. The vulnerable code unsafely deserializes payloads from HTTP requests to Server Function endpoints.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: Unauthenticated RCE in React Server Components (React2Shell) (multi/http/react2shell_unauth_rce_cve_2025_55182). A module existing is not the same as active exploitation; see metasploit.com.